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Oxybutynin for Hot Flashes vs Stellate Ganglion Block

A side-by-side comparison of two menopause relief methods — efficacy, cost, how they work, and who shouldn't use them.

Last verified October 11, 2026Updated October 11, 2026

Side-by-side comparison

Oxybutynin for Hot Flashes An off-label anticholinergic prescription (oxybutynin), approved for overactive bladder, that can reduce moderate to severe hot flashes.
Stellate Ganglion Block An injection of local anesthetic into a nerve bundle in the neck that may interrupt hot flash signals for several months.

Method	Oxybutynin for Hot Flashes An off-label anticholinergic prescription (oxybutynin), approved for overactive bladder, that can reduce moderate to severe hot flashes.	Stellate Ganglion Block An injection of local anesthetic into a nerve bundle in the neck that may interrupt hot flash signals for several months.
Efficacy	Oxybutynin for Hot Flashes Recommended (limited evidence) Recommended with limited evidence by the Menopause Society.	Stellate Ganglion Block Recommended (limited evidence) Recommended with limited evidence by the Menopause Society.
Cost	Oxybutynin for Hot Flashes $11–$14 monthly Insurance: Varies	Stellate Ganglion Block Contact provider Insurance: Varies
Duration	Oxybutynin for Hot Flashes Daily pill (ongoing)	Stellate Ganglion Block One injection; effects followed for 6 months in the main trial
Reversibility	Oxybutynin for Hot Flashes Reversible	Stellate Ganglion Block Reversible
STI protection	Oxybutynin for Hot Flashes No	Stellate Ganglion Block No
How it works	Oxybutynin for Hot Flashes Oxybutynin is an anticholinergic that blocks muscarinic acetylcholine receptors, including receptors in the brain, and can decrease sweating.	Stellate Ganglion Block A clinician injects local anesthetic into the stellate ganglion, a nerve bundle in the neck that is part of the sympathetic nervous system. This may interrupt the temperature-regulation signals that trigger hot flashes.
Prescription	Oxybutynin for Hot Flashes Required Telehealth Prescription	Stellate Ganglion Block Required In-Person Procedure
Side effects	Oxybutynin for Hot Flashes Dry mouth (over 50% of users) Constipation Dizziness Drowsiness	Stellate Ganglion Block Drooping eyelid (Horner's syndrome, temporary) Temporary hoarseness Dizziness Rare serious complications (seizure if injected into a blood vessel, bleeding)
Who shouldn't use this	Oxybutynin for Hot Flashes Uncontrolled narrow-angle glaucoma Urinary retention Gastric retention Hypersensitivity to oxybutynin or any ingredient Severe gastrointestinal disease that slows gut motility	Stellate Ganglion Block Active local or systemic infection Bleeding disorder Allergy to local anesthetic

Key differences

The Menopause Society rates both recommended (limited evidence). How long it lasts: Oxybutynin for Hot Flashes, daily pill (ongoing); Stellate Ganglion Block, one injection; effects followed for 6 months in the main trial. Oxybutynin for Hot Flashes: costs $11–$14 monthly. Stellate Ganglion Block: Contact provider.